Receiver-Based ACK Splitting Mechanism for TCP over Wired/Wireless Heterogeneous Networks(Network)
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概要
- 論文の詳細を見る
With the rapid development of wireless network technologies, heterogeneous networks with wired and wireless links are becoming common. However, the performance of TCP data transmission deteriorates significantly when a TCP connection traverses such networks, mainly because of packet losses caused by the high bit error rate of wireless links. Many solutions for this problem have been proposed in the past literature. However, most of them have various drawbacks, such as difficulties in their deployment by the wireless access network provider and end users, violation of TCP's end-to-end principle by splitting the TCP connection, or inapplicability to IP-level encrypted traffic because the base station needs to access the TCP header. In this paper, we propose a new mechanism without such drawbacks to improve the performance of TCP over wired and wireless heterogeneous networks. Our mechanism employs a receiver-based approach, which does not need modifications to be made to the sender TCP or the base station. It uses the ACK-splitting method for increasing the congestion window size quickly in order to restrain the throughput degradation caused by packet losses due to the high bit error rate of wireless links. We evaluate the performance of our mechanism and show that our mechanism can increase throughput by up to 94% in a UMTS network. The simulation results also show that our mechanism does not significantly deteriorate even when the receiver cannot perfectly distinguish whether packet losses are due to network congestion or bit errors on the wireless links.
- 社団法人電子情報通信学会の論文
- 2007-05-01
著者
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NAKATA Masashi
Graduate School of Nano Science and Technology, Waseda University
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HASEGAWA Go
Graduate School of Infomation Science and Technology, Osaka University
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Hasegawa Go
Osaka Univ. Toyonaka‐shi Jpn
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Hasegawa Go
Graduate School Of Infomation Science And Technology Osaka University
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Nakata Masashi
Graduate School Of Infomation Science And Technology Osaka University
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NAKANO Hirotaka
Graduate School of Infomation Science and Technology, Osaka University
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Nakano Hirotaka
Osaka Univ. Toyonaka‐shi Jpn
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